“NIKE KEYGEN” IN MINIATURE

With the introduction of new technical requirements to models-copies category S5 most preferred as a prototype steel two-stage rocket with large differences in diameters of the housings of the steps. This requirement well enough to answer the research rocket developed in the US on the basis of the accelerator anti-aircraft missiles “Nike” (“Nike-Tomogavk”, “Nike-Keygen”, “Nike-Apache” and others).
Readers are invited to description rockets “Nike Kigen” and its class model S5C, made in the scale 1:10,4775 (scale due to the adjustment of the diameter of the first stage up to 40 mm). The sample runs show that for this model, take-off height of 500 m is not the limit value.
 
At the request of the editors have prepared for you master of sports of the international class Vladimir Minakov and honored coach of the USSR S. Zhidkov.
 
The proposed model-copy two-stage: first stage with MRD 5-3-0, the second with MRD 5-3-6, though it may be a different combination of motors with total impulse of 10 N*s. All parts of the body and compartments is wound from fiberglass 0.025 mm four layers on the resin ED-20. Mandrel metal. Pre-heated and applied to the surface mastic “Edelvays”. When forming the crossing location must be podmochat to STEKLONiT.
 
After curing of the resin is the slight shift of wikileak, rough machining burrs and heat treatment for 2 hours at 120°C. the Final finishing of the surface on the lathe with emery paper of different grits.
 
The external surfaces of the cases are degreased and covered with two or three coats of the lacquer AK-20. After polishing, controlled by the sizes according to the thickness of the future of the paint layer is 0,05—0,07 mm. Body parts are cut to length. Subassembly — on epoxy glue such as an EAF or To a-153.
 
A model double-primed nitro with aluminum powder, then applied 2-3 coats of white nitroenamels. Among all the stages is scraping the surface with emery paper. The last layer of paint will not be processed. The polishing of intermediate coating is not less than an hour after their deposition as at the end of the drying lasts for 12 hours. Stabilizers covered by yellow and red enamels. The best results in quality coverage gives the spray “Airbrush”.
The recovery system of the first stage feed size mm. 27Х350 To transmit a firing pulse to the engine of the second stage in the case of the first mounted tube Ø 3 mm, formed by two layers of fiberglass with a thickness of 0.025 mm and a layer of carbon fabric with a thickness of 0.08 mm. Lugs case balsa, the stabilizer is made of sheet material thickness 0.15—0.3 mm (thick paper, cardboard, cardboard, polystyrene, celluloid) with the production of a thin balsa spar and the root rib.
 
The second stage returns to earth on the ribbon size 30X3000 mm, made of metallized polyester with a thickness of 0.012—0.018 mm (thickness of the polyester tape of the first stage of 0.018 mm). Stabilizers — Micarta sheet thickness of 1 mm. All items detailing the copies made of polystyrene or celluloid.
 
MRD first stage is fixed in the compartment with a bamboo pin. Before that, it poured a charge of gunpowder measure a depth of 2 mm, made of shells of small caliber cartridge. In the second stage engine to fill up 3-4 of these measurements of MRD gunpowder and closed with a paper wad. After fixing in the housing of the second stage sprinkle a little talcum powder and lay a wad of cotton wool, wrapped in mikulintsy paper. A rolled kehlet tape using fluoroplastic film and after laying asleep on top of the talc necessary for the formation of the cloud. Fairing DeGroat 2-3 g of clay.
 
The starting mass of the model is equal to 65-70 g. starts from the starting of gas-dynamic devices. When using the guide pin on the casing of the first stage you need to fix the guide ring.
 
Description of the launch prototype
 
Probe “Nike Keygen” developed HAKA, Michigan state University and the firm “Tiokol” for research under the program of the International geophysical year (1958/1959 year), which included photographing clouds, study the water balance of the atmosphere and magnetic sounding of the ionosphere. The first launch took place on 6 July 1956. During the period from 1960 to 1968 was launched more than 300 missiles. They were used in international studies, which was attended by Britain, Japan, Norway, Denmark and Pakistan.
 
“Nike Kigen” — a two-stage solid-fuel rocket, used as the first stage of the accelerator from the M5 anti-aircraft missiles “Nike” with four stabilizers. The second stage is driven by the engine TE-82 MOD.2 “Keygen” developed by “Tiokol” (with four fins).
 
The launch is made with a special starting device “of zero length” or a modified device anti-aircraft missiles “Nike”. After burn-tier “Nike” is separated from the stage “Keygen”. The ignition of the engine of the second stage after separation, with a time delay determined by a special pyrotechnic device. The last shall be enforced during the launch. After the burn, fuel “Keygen” the rocket is in a ballistic trajectory.
 
When conducting photographing with the equipment compartment is separated from hollowware fairing at an altitude of 80 km and reaches a height of 120 km between heights is photography. Compartment returns with the help of parachutes. Other research data transmitted wirelessly to the surveillance center.
 
Colouring: the body and the head of the rocket — and-white; the tail, the plane I — yellow; the tail, the plane of the II — IV — red.
 
The drawings are based on documentation and photos of the rocket, located at the center of the polygon to NASA.
 
Dimensions are in inches; parentheses indicate dimensions in mm.
Nike Cajen
 
Technical data missiles “Nike Kigen”
 
Overall length, m: 8,04
 
Maximum diameter, m: 0,42
 
Launch weight, kg: 688
 
Mass of payload, kg: 22,5
 
The operation time of engines: 7
 
Pull DV. the first stage, TS: 22,1
 
Pull DV. the second stage, TS: 3,56
 
Maximum acceleration, q: 60
 
Maximum speed, km/s: 6,7
 
Lift height, cm: 161

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